Patent US2934178A successfully refreshed from Google Patents.
US2934178A
Expired / Lapsed
US
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Liquid cooled brake mechanism
Assignee: ERLING D SEDERGREN
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Filing: 1957-02-28
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Granted: 1960-04-26
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Expires: 1977-02-28
Abstract
No abstract record available.
Inventors
- 👤 Wilfred A Eaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:45
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/78; F16D2065/784
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US466275A
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US795974A
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US1628492A
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US2051286A
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FR802800A
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GB546215A
Cited
US2381393A
Cited
US2719620A
Cited
DE896915C
Cited
US2770442A
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US2747702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |